|  07-06-2015, 06:54 AM | #5 | 
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				Join Date: Mar 2015 Location: Texas 
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				What is a DME?
			 
 
			  
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					Originally Posted by MNBoxster  Hi,
 Good Post, but of course it's only relevant to the '97-'02 Models.  These Cars have the 1st Gen VarioCam which uses a simple Solenoid Mechanism controlled by the DME.  In it, the Valve Timing is in either the Standard or Advanced Mode, a simple ON/OFF.
 
 The 2nd Gen VarioCam used in Models since '03 uses an Oil-Filled Stator with internal Vanes.  The Hydraulic pressure created by the turning Vanes causes the Cams (and the Valve Timing) to shift infinitely through it's 40° Range.  It does not use Solenoids, or the DME, to activate it.  Hope this helps...
 
 Happy Motoring!... Jim'99
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